{"product_id":"carrier-lc750lccmrayx500-control-board-cyc67o","title":"OEM Carrier DSI Control Board LH33WP002 for LC750LCCMRAYX500","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model LC750LCCMRAYX500\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM Direct Spark Ignition (DSI) control board for the \u003cstrong\u003eCarrier LC750LCCMRAYX500\u003c\/strong\u003e furnace. The DSI control board is the brain of your heating system — it sequences the inducer motor, gas valve, spark igniter, and blower in precise timing. When this board fails, you may experience a hard lockout with no ignition attempt, repeated failed ignition cycles, an inducer that runs but no spark or gas call, or a system that powers on but produces no heat whatsoever. Fault codes displayed on the board's LED indicator are your first diagnostic clue.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Direct Spark Ignition (DSI) control | OEM Part Number: \u003cstrong\u003eLH33WP002\u003c\/strong\u003e | Factory-matched timing sequences for inducer, gas valve, and blower | Compatible input voltage: 120V \/ 24V control circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM board, manufactured to exact factory specifications. Aftermarket boards frequently feature mis-matched timing delays and relay ratings that cause nuisance lockouts, premature component wear, and voided equipment warranties. Always choose OEM for control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 4\/5\u003c\/strong\u003e — Control board replacement requires comfort with wiring diagrams and low\/line voltage. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, phone or camera to photograph all wiring harness connections before removal. Disconnect power at the breaker and verify with a multimeter before beginning. If fault codes are present, document them prior to board replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the \u003cstrong\u003eCarrier LC750LCCMRAYX500\u003c\/strong\u003e furnace. Always cross-reference OEM part number \u003cstrong\u003eLH33WP002\u003c\/strong\u003e against your existing board's label before ordering to confirm fitment. If you have any fitment questions, our HVAC parts specialists will verify compatibility before you order — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909291102579,"sku":"CARRIE-LC750LCCMRAYX500-CONTROL_BOARD-LH33WP002","price":156.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909291135347,"sku":"CARRIE-LC750LCCMRAYX500-CONTROL_BOARD-LH33WP002-GEN","price":90.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-LH33WP002_948fffc4-1aa3-4ffd-aba8-6d2b9d9807ae.jpg?v=1782914392","url":"https:\/\/nationalhvacparts.com\/products\/carrier-lc750lccmrayx500-control-board-cyc67o","provider":"National HVAC Parts","version":"1.0","type":"link"}